plug-in
Cod. +030221881 rel. 1.5 - 26/10/10
37
EE shown during operation or when the unit is turned on
error in reading the parameters from the memory. See Data error.
Ed flashing
The last defrost ended after exceeding the maximum duration rather than reaching the end defrost set temperature:
check parameters dt, dP and d4;
check the efficiency of the defrost function.
The message will disappear if the next defrost ends at the set temperature.
dF flashing
defrost in progress:
this is not an alarm signal but rather an indication that the instrument is performing a defrost. It is displayed only if parameter
d6 = 0.
7.3 Data error
In special operating conditions the instrument may detect errors in the internal storage of the data. These errors may compromise
the correct operation of the instrument. If the microprocessor detects a data storage error, display shows the code EE.
The instrument tries repeatedly to reset the correct operating conditions, and this is indicated by the three dashes --- (reset)
alternating with the code described above.
Warning: if the serial interface to the supervisor (PJOPZ48500) or the HACCP module is connected, one possible cause of this
behaviour may be incorrect wiring or a fault in the interface itself. In this case, disconnect the interface and check if the problem
remains.
If the anomalous situation remains, the control must be replaced. If on the other hand the message disappears, the control can still
be used. When the EE error occurs frequently and/or is hard to resolve, it is recommended to have the control checked, in that the
original accuracy may not be guaranteed.
It is good practice to investigate the cause of this type of error so as to prevent it occurring again. In particular, carefully read the
chapter on INSTALLATION and the paragraph Special and general warnings.
7.3.1 Loading the default parameters
The default values of the parameters can be restored by following the procedure described below:
disconnect power to the instrument;
press and hold the
and buttons, and reconnect power to the instrument;
the display shows the message
- - - followed by CF;
after some seconds the instrument will start working according to the default configuration. Any of the F and C parameters
which differ from the default configuration must be modified.
IMPORTANT WARNINGS
the procedure described above resets the instrument and assigns the default parameters. As a result, all modifications made to
the operating parameters will be lost;
given the delicacy of this operation, the procedure must be performed by specialist personnel. This procedure does not damage
the instrument, but rather resets its original purchase configuration. Therefore, if the operating parameters have been modified
in a disorganised fashion, to the point where the control is unworkable, it can be reset to its original configuration;
the setting of level F visibility for the parameters is not modified by the procedure;
if a programming key is used the reset operation is much simpler, as long as the key contains the required configuration, or it
can be copied from another instrument programmed in the same way. In this case, the visibility flags are updated.
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